Term ends Sep 15, 2027 · High confidence
20-year base term ended May 11, 2025
Held by Psemi Corporation
Filed May 11, 2005 as application 11/127,520 · Granted Nov 3, 2009
Base term plus 857 days of patent term adjustment (USPTO delay)
Today
2005
2027
Clock starts
May 11, 2005
May 11, 2005
Term ends
Sep 15, 2027
Sep 15, 2027
Granted
Nov 3, 2009
Nov 3, 2009
base term
patent term adjustment
fee events
Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
857
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
3 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.
56
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
This patent's term runs 857 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. Confidence: High. from the record
How we calculated this date
One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts May 11, 2005, when this application, 11/127,520, was filed | May 11, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +857 days, USPTO patent term adjustment record | Sep 15, 2027 | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Sep 15, 2027 | High confidence |
This family
| US 6,737,900 | Term ended Apr 2022 | Apr 2022 |
| US 7,719,343 | Term ended Feb 2025 | Feb 2025 |
| US 7,248,120 | Term ended Jun 2024 | Jun 2024 |
| US 7,613,442 | this patent Sep 2027 | Sep 2027 |
| US 7,088,971 | Term ended Jun 2024 | Jun 2024 |
| US 8,081,928 | Lapsed on the fee record Dec 2023 | Dec 2023 |
| US 7,619,462 | In force Jul 2027 | Jul 2027 |
| US 8,131,251 | Lapsed on the fee record Mar 2024 | Mar 2024 |
8 of 56 applications in this family shown, earliest filings first. The applications whose file history this site holds. The family may have others.
Assignments
Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| May 10, 2005 Reel 16564, frame 621 | Kelly, Dylan J.; Burgener, Mark L.; Cable, James S. | Peregrine Semiconductor Corporation | Assignment of Assignor's Interest |
| Jan 24, 2018 Reel 45749, frame 391 | Peregrine Semiconductor Corporation | Psemi Corporation | Change of Name |
Sources
Google Patents · The patent document at USPTO · Assignment records at USPTO
USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup
Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Sep 2027
Term ends Sep 15, 2027. No further fees fall due before then
Note
The 857 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
16
later US patents cite this one
That is above the median of utility patents granted in 2009 in our data, the only group it is compared against.
How we rank
Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.